PHILADELPHIA – An office party goes on without her, across town in an affluent world vastly different from the one where Mariana Chilton now finds herself. Her husband’s tried calling. Twice. And still she sits in dress slacks and stocking feet, gray suede shoes tossed aside, on the drab carpet of a row house in the Philadelphia projects, playing with someone else’s children while her own three kids wait for Mom to come home. She is listening, for the umpteenth time, as another mother speaks about what it means to be poor and hungry in America.